XYYY syndrome, also known as 48,XYYY, is a chromosomal disorder in which a male has two extra copies of the Y chromosome. The syndrome is exceptionally rare, with only twelve recorded cases. The presentation of the syndrome is heterogeneous, but appears to be more severe than its counterpart XYY syndrome.

XYYYY syndrome, also known as 49,XYYYY, is an exceptionally rare chromosomal disorder in which a male human has three additional copies of the Y chromosome. Only seven non- mosaic cases of the disorder have ever been recorded in the medical literature, as well as five mosaic cases, of which two had more 48,XYYY than 49,XYYYY cells. [1] .

XYY syndrome, also known as Jacobs syndrome, is an aneuploid genetic condition in which a male has an extra Y chromosome. [1] . There are usually few symptoms. [2] . These may include being taller than average and an increased risk of learning disabilities. [1][2] The person is generally otherwise normal, including typical rates of fertility. [1]

48,XYYY syndrome is caused by genetic mutations, also known as pathogenic variants. Genetic mutations can be hereditary, when parents pass them down to their children, or they may occur randomly when cells are dividing.

2023年2月13日 · XYY syndrome is a genetic condition that occurs when a male is born with an extra Y chromosome. Instead of having one X and one Y sex chromosome, those with XYY syndrome have one X and two Y...

48,XYYY syndrome is a rare Y chromosome number anomaly that affects only males and is characterized by mild-moderate developmental delay (especially speech), normal to mild intellectual disability, large, irregular teeth with poor enamel, tall stature and acne.

2017年6月7日 · XYY syndrome is a genetic condition that occurs when a male has an extra copy of the Y chromosome in each of their cells (XYY). Sometimes, this mutation is only present in some cells. Males with...

XYYY syndrome is caused when a male has one X chromosome and three Y chromosomes instead of one X chromosome and one Y chromosome as usual. This happens because of nondisjunction. Nondisjunction is when chromosomes in …

XYYY syndrome, also called Triple Y syndrome or 48,XYYY syndrome, is a chromosome condition that only affects boys and men.

Little is known about XYYYY syndrome. The symptoms of XYYYY syndrome largely vary. Physical traits include hypertelorism (wide-spaced eyes), low-set ears, radioulnar synostosis (fusion of the radius and ulna bones in the arm), and …

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XYY syndrome is a genetic condition found in males only. About 1 in 1,000 boys have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys. Other symptoms can include problems with spoken language and processing spoken words, coordination problems, weaker muscles, hand tremors, and behavioral problems.

2023年4月21日 · XYY syndrome (Jacobs syndrome or 47,XYY) is a genetic condition that occurs when a person assigned male at birth is born with an extra copy of the Y chromosome in some or all of their cells. Males are usually born with one X and one Y chromosome.

2025年2月4日 · What is XYY syndrome? XYY syndrome, also known as Jacobs syndrome, is a chromosomal disorder characterized by the presence of an extra Y chromosome (47, XYY). Typically, genetic males have one X and one Y chromosome, but individuals with XYY syndrome possess one X and two Y chromosomes.

XYY syndrome is a sex chromosome abnormality in which boys are born with two Y chromosomes and one X chromosome. Chromosomes are structures within cells that contain DNA and many genes. Genes contain instructions that determine how the body is supposed to look and function. The sex chromosomes determine whether a fetus becomes male or female.

Diagnosing XYY syndrome typically involves a combination of clinical evaluation, chromosomal analysis, and genetic testing. Karyotyping is the standard method for diagnosing XYY syndrome. This test involves analyzing an individual's chromosomes to detect any abnormalities. In the case of XYY syndrome, an additional Y chromosome will be identified.

XYYY syndrome, also called Triple Y syndrome or 48,XYYY syndrome, is a sex chromosome variation that only affects boys and men. It is extremely rare and there is little information available, partly because there may be boys and men who have XYYY syndrome who develop normally or with minimal problems and never come to the attention of the

XYY syndrome is a genetic condition found in males only. About 1 in 1,000 boys have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys. Other symptoms can include problems with spoken language and processing spoken words, coordination problems, weaker muscles, hand tremors, and behavioral problems.

47, XYY syndrome is a syndrome (group of signs and symptoms) that affects males. For some males with this syndrome, signs and symptoms are barely noticeable.

What Is XYY Syndrome? XYY syndrome is a genetic condition found in males only. About 1 in 1,000 boys have it. Boys with XYY syndrome — also known as 47,XYY — might be taller than other boys.